Microsoft Word - BGHR-2-SA09-4-2- Web viewBe responsible for cutting and patching of defects appearing in the gypsum board work, ... Microsoft Word - BGHR-2-SA09-4-2-2013 Last modified

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Agriculture and Rural Development ProgramRehabilitation of Kfarshima Laboratory

FINISHES____________________________________________________________________4

CEILING SUSPENSION SYSTEMS ______________________________________________________4A. Scope____________________________________________________________________________4B. Performance and Standards___________________________________________________________4C. Related Items________________________________________________________________________4D. Submittals___________________________________________________________________________4E. Product Handling___________________________________________________________________5F. Materials_________________________________________________________________________5G. Workmanship______________________________________________________________________6

PORTLAND CEMENT PLASTER ______________________________________________________7A. Scope____________________________________________________________________________7B. Performance and Standards__________________________________________________________7C. Related Items______________________________________________________________________7D. Submittals______________________________________________________________________7E. Product Handling___________________________________________________________________7F. Materials_________________________________________________________________________7G. Workmanship______________________________________________________________________8

CERAMIC FLOOR TILES ____________________________________________________________9A. Scope____________________________________________________________________________9B. Performance and Standard___________________________________________________________9C. Related Items______________________________________________________________________9D. Submittals_________________________________________________________________________9E. Product Handling___________________________________________________________________9F. Materials________________________________________________________________________10G. Workmanship_____________________________________________________________________10

CERAMIC WALL TILES ____________________________________________________________16A. Scope___________________________________________________________________________16B. Performance and Standards_________________________________________________________16C. Related Items_____________________________________________________________________16D. Submittals_____________________________________________________________________16E. Product Handling__________________________________________________________________16F. Materials________________________________________________________________________17G. Workmanship_____________________________________________________________________17

PRECAST TERRAZZO _____________________________________________________________20A. Scope___________________________________________________________________________20B. Performance and Standards_________________________________________________________20C. Related Items_____________________________________________________________________20D. Submittals_______________________________________________________________________20E. Product handling__________________________________________________________________20F. Materials________________________________________________________________________20G. Workmanship_____________________________________________________________________21

GYPSUM BOARD FALSE CEILING____________________________________________________23A. Scope___________________________________________________________________________23

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B. Performance and Standards_________________________________________________________23C. Related Items_____________________________________________________________________23D. Submittals_______________________________________________________________________23E. Product Handling__________________________________________________________________23F. Materials_________________________________________________________________________23G. Workmanship_____________________________________________________________________24

SUSPENDED CEILING SYSTEMS_____________________________________________________36A. Scope___________________________________________________________________________36B. Performance and Standards_________________________________________________________36C. Related Items_____________________________________________________________________36D. Submittals_______________________________________________________________________36E. Product Handling__________________________________________________________________36F. Materials________________________________________________________________________36G. Workmanship_____________________________________________________________________37

SUSPENDED CEILING SYSTEMS_____________________________________________________38A. Scope___________________________________________________________________________38B. Performance and Standards_________________________________________________________38C. Related Items_____________________________________________________________________38D. Submittals_______________________________________________________________________38E. Product Handling__________________________________________________________________38F. Materials________________________________________________________________________38G. Workmanship_____________________________________________________________________39

STONE _________________________________________________________________________40A. Scope___________________________________________________________________________40B. Performance and Standards_________________________________________________________40C. Related Items_____________________________________________________________________40D. Submittals_______________________________________________________________________40E. Materials________________________________________________________________________41F. Workmanship_____________________________________________________________________41

MARBLE _______________________________________________________________________43A. Scope___________________________________________________________________________43B. Performance and Standards_________________________________________________________43C. Quality Assurance_________________________________________________________________43D. Related Items_____________________________________________________________________43E. Submittals_______________________________________________________________________43F. Materials________________________________________________________________________44G. Workmanship_____________________________________________________________________44

RESILIENT FLOORING_____________________________________________________________45A. Scope___________________________________________________________________________45B. Performance and Standard__________________________________________________________45C. Submittals_______________________________________________________________________45D. Transportation, Handling and Storage_________________________________________________45E. Materials________________________________________________________________________45F. Workmanship_____________________________________________________________________46

PAINTING ______________________________________________________________________47

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A. Scope___________________________________________________________________________47B. Performance and Standards_________________________________________________________47C. Related Items_____________________________________________________________________47D. Submittals_______________________________________________________________________47E. Product Handling__________________________________________________________________48F. Material_________________________________________________________________________49G. Workmanship_____________________________________________________________________50

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FINISHES

CEILING SUSPENSION SYSTEMS

A. Scope1. The work shall consist of the supply and fixing of new suspension systems appropriate in all

respects to each of the types of suspended ceiling employed in the Contract.

B. Performance and Standards1. Adequacy of Support

a. The suspension systems shall be designed to provide substantial support for the ceiling finishes and associated light fittings, grilles, margins and any item forming part of the finished ceilings, in order that the soffit of the ceiling remains permanently true and level within specified tolerances.

b. The method of fixing the suspension system to the building structure shall be agreed with the Contracting authority and shall be completely secure.

c. Where so required the system shall be sufficiently robust to provide fixings and support for mechanical and electrical services suspended within the ceiling voids, and shall be designed and set out to facilitate the integration of such services.

d. Where partitions terminate at the suspended ceiling level and are not otherwise restrained the suspension system shall be sufficiently robust and suitably braced to provide rigid support to the tops of the partitions.

Wherever possible the bracing shall be two directional forming a 'V' in elevation and 'X' in plan, with 45 deg. angles.

2. Rust and Corrosion ResistanceAll members shall not rust and shall not suffer any form of corrosion.

3. Thermal MovementThe system shall make allowance for thermal movement of the ceiling material due to temperature fluctuations deriving from heat emitted by light fittings or from any other cause.

4. StandardsAll materials shall conform to relevant British Standards, in particular to those Standards, where appropriate, listed in sections 05010, Metal Materials, and 05030, Metal Finishes. BS CP 290.

C. Related ItemsMetal MaterialsMetal FinishesSuspended Ceiling Systems

D. Submittals1. Data

The Contractor shall supply the Contracting authority with duplicate copies of manufacturer's published data, instructions for fixing and assembly and any other relevant information.

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2. SamplesThe Contractor shall provide samples of components and materials to be used in the work.A mock-up shall be erected of each type of ceiling, including light fittings, diffusers, etc., as described elsewhere. The mock-ups shall comprehensively include the suspension system, which shall be approved by the Contracting authority before the commencement of the work in general.

3. Shop DrawingsThe Contractor shall submit requisite copies of shop drawings showing all necessary details prior to the commencement of work and shall obtain Contracting authority's approval.

E. Product Handling1. All materials shall be handled at all times as to prevent damage. Any damaged materials shall

be replaced at no additional charge.

F. Materials1. Note: The Contractor is referred also to the following sections which include relevant

suspension systems:Section 09515 Suspended Ceiling Systems

2. Materials GenerallySuspension systems shall generally be of hot dip galvanized steel members comprising all hangers, runners, trimmers, bearers, clips, tie wires, bolts and screws necessary to install the ceilings rigidly and to a true and level finish. The use of timber is to be avoided where possible, but if necessary, shall be carcassing grade softwood free from defects, pressure impregnated, rendered fully resistant to termite attack, and of appropriate moisture content.All cut ends and any damage to protective coatings shall be made good beforeplastering commences, to ensure that no subsequent staining occurs on adjacent finishes and that no corrosion will occur in the ceiling void on any ceiling components. Should any such defects occur before the end of Defects Liability period, the Contractor will be required, at his own expense, to cut out and make good to the satisfaction of the Contracting authority, including redecoration of the complete ceiling involved.In spaces of particularly high humidity, (80 deg. humidity) the members of the suspension system shall be aluminum alloy in lieu of steel.Wherever dissimilar metals are in contact with each other precautions shall be taken to prevent corrosion from electrolytic action.

3. Bolts and ScrewsAll bolts and screws, washers and nuts shall be sherardized or otherwise protected to the Contracting authority's satisfaction, and shall be of sufficient strength for their purpose.

4. Tying WireAll tying wire shall be galvanized soft wire conforming with BS 443 and shall be1.2mm (for securing expanded metal) and 3mm (for securing ceiling runners to bearer channel.

5. Expanded Metal BeadsAt all perimeters and openings in expanded metal ceilings, angle bead, or stop beads shall be to the approval of the Contracting authority.

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All metal beads shall comply with BS 1246: 1959.

6. Hangers, Bearers, Runners, etc.The principal components of the suspension system shall be in accordance with the drawings, or approved manufacturer's standard components, in mild steel, (or aluminum: see F2 above).

G. Workmanship1. General

Methods of erection and all workmanship shall be in accordance with the recommendations of the manufacturer of the ceiling system, and with the relevant clauses of BS CP 290.

2. Setting OutThe contractor shall allow for all secondary systems of suspension as may be necessary to bridge ducts or other services to maintain the necessary fixing centres on the system. Before starting work ensure that light fittings, grilles, etc., are in correct positions relative to ceiling grid. Ensure that all trades use common setting out points. Ensure that the ceiling is properly related to each grid line of the building, and that there is no accumulative creep over the length or width of any ceiling. The ceilings are part of a modular co-ordination system joint lines will dictate locations for pre manufactured partitions, panels, screens, etc., which will be fixed later. No cutting or making up will be allowed.

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PORTLAND CEMENT PLASTER

A. ScopeThis section specifies internal plaster of cement and sand to blockwall or concrete surfaces.

B. Performance and Standards1. The plaster shall have complete adhesion to the wall and shall not crack or craze.2. Cement BS 12

Sand BS 1199. Table 1.

C. Related ItemsPrecast Concrete BlockworkSuspended Ceiling Systems

D. Submittals2. Samples of Materials

The Contractor shall supply a sample of the sand for plastering for approval by the Contracting authority, and such samples as the Contracting authority might require of miscellaneous plastering materials such as plaster stops and casing beads.

3. Sample of WorkmanshipThe Contractor shall carry out the plastering of one wall as a sample of workmanship and finish. The generality of the work shall not proceed until the sample is approved by the Contracting authority.

E. Product HandlingCement shall be delivered in the manufacturer's sealed bags or other approved container, and shall be stored off the ground, in a dry shed. Sand shall be kept free from organic or any other contaminated substance.

F. Materials1. Cement

Cement shall be Portland Cement to BS 12.2. Sand

Sand shall be clean, washed sharp sand to BS 1199, Table 1.3. Angle Beads, Stop Beads, etc.

All such plastering accessories shall be standard galvanized mild steel products.4. Mix

The mix shall be 1 part cement to three parts sand by volume, or as otherwise agreed with the Contracting authority. Plasticiser shall only be used with the approval of the Contracting authority.

5. AccessoriesAngle beads shall be to the approval of the Contracting authority. Stop beads shall be to the approval of the Contracting authority.The above accessories are from 0.56 tight coat galvanized sheet, synthetic coated, with white PVC protective nosing.

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G. Workmanship1. Preparation of Substrate

Ensure that all chases or other apertures have been cut. Ensure that the substrate surface is free from dust, oil, etc. Ensure adequate key for plaster, if necessary by hacking the surface or applying a coat of approved bonding agent. Rake out joints in blockwork.

2. Trims and JointsFix beads, stops, angle beads, etc., plumb, square and true to line and level, as indicated on drawings.

3. PlastersUnless single coat plastering is agreed by the Contracting authority apply plaster in two coats to a total thickness as shown on drawing on as stated in the B.O.Q.Cross-scratch surface of first coat to provide key for second coat.Allow the first coat to dry thoroughly before applying second coat.Dub out as necessary to correct inaccuracies; dubbing out shall not exceed 10mm. Apply second coat and finish with a wood float.Each coat shall be applied firmly to achieve good adhesion, in one continuous operation. Finish the surface to a true plane to the correct line and level and plumb, with all angles and corners to a right angle unless otherwise shown on the drawings. Wire mesh metal lathing shall be installed at all junctions of dissimilar materials.

4. First coat of plaster under wall cladding where indicated shall be scratched for good adhesion of mortar for tiling.

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CERAMIC FLOOR TILES

A. Scope1. This section covers the supply and fix a mass ceramic tiles and skirting.2. The work shall include all necessary expansion and control joints and joint sealers as specified

in section 07900: Sealants.

B. Performance and Standard

1. Fully vitrified tiles shall have a water absorption not exceeding 0.3%.2. The whole floor, including bedding and jointing materials shall be capable of resisting the

action of acids, oils or fats to which it can be expected to be subjected according to its location in the project.

3. The ceramic floor tiling shall be carried out in accordance with BS CP 202.4. The tiles shall conform to BS 6431, Fully vitrified ceramic.

C. Related ItemsBeds and Screeds

D. Submittals1. Sample Tiles

The Contractor shall submit for the Contracting authority's approval sufficient plain flooring tiles to indicate the quality and range of color or shade variety that can be expected.

2. Sample PanelFollowing initial selection of a specific tile the contractor shall submit a panel not less than 1m square of the tiles stuck onto an appropriate rigid backing sheet with joints of the specified width pointed with the specified grout.

3. Sample FloorFollowing approval of the sample panel the Contractor shall lay one complete room floor which, when approved, shall remain as the standard by which the remainder of the work shall be judged.The room shall be one selected by the Contracting authority, and shall include a movement joint which shall be completed with the specified joint sealer as part of the sample.

4. Compliance with StandardThe Contractor shall supply a written statement of compliance with the specified standard in respect of each type of tile submitted.

5. DataCopies of the manufacturer's data and fixing recommendations shall be handed to the Contracting authority. Any variation between such recommendations and the requirements of this Specification shall be called to the attention of the Contracting authority.

E. Product Handling1. Tiles

The tiles shall be transported and stored in the manufacturer's cartons with seals unbroken and labels intact until time of use.

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Tiles shall be handled and stored at all times to prevent damage and soiling.2. Bedding Materials

Cement, aggregates, etc., shall be handled and stored.3. Mortar

Cement and sand mortar shall be 1:3.The cement shall be Portland cement to BS12. The water shall be clean, free of impurities and the least needed for proper workability.The bedding mortar shall consist of a mixture not richer than 1 part cement to 3 parts sand and not leaner than 1 part cement to 4 parts sand, and shall be not less than 12mm thick. The sand for the mortar shall be in all respects in accordance with the requirements of BS 1200.

F. Materials1. Tiles

a. All tiles shall be as manufactured by "FLAVIKER", "VACCARI", “MARRAZZI” or approved equal.

b. All tiles shall be in accordance with BS 6431.c. Tiles shall be fully vitrified as defined in BS 6431.d. Tiles used in wet areas shall have an approved anti-slip surface produced by the nature

of the tile ingredients and not by ribbing, projecting studs or other form of surface profiling.Tiles used for steps shall be provided with special anti-slip grooves.

e. SizesSize shall be as indicated in the Bill of Quantities and/or as directed by the Contracting authority.

f. Skirting tiles shall be 80mm high x 8mm thick and shall match the floor tiles with rounded edge and be from the same manufacturer.

g. Colours, Finish and DefectsThese shall be selected by the Contracting authority and shall accurately match approved samples. The tiles shall be entirely free from defects and blemishes.Ceramic tiles shall be mat, or as directed by the Contracting authority.

2. Bedding Materials: MortarCement shall be Portland Cement to BS 12. Sand shall comply with the requirements of BS 1200 clean, sharp, not too fine and free from clay, organic or soluble matter. Sea sand shall not be used. The mixture shall be not richer than 1:3 and not leaner than 1:4, cement: sand, and the mortar shall not be less than 12mm thick.

3. GroutThe grouting mortar shall be flooring grade colored grout to the Contracting authority's approval.


The floors shall be laid in accordance with BS CP 202.2. Inspection and Protection of Base

The Contractor shall inspect the base on which the ceramic tiles are to be laid. The base

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surface shall be thoroughly clean, free from dust, oil, plaster, lime or other foreign materials immediately before tile laying is commenced.

3. Bay DivisionThe floor areas shall be sub-divided into bays not exceeding 10m with the long side of each bay

not exceeding the shorter side by more than one and a half times. Movement joints around the perimeter of the floor and at bay sub-divisions shall be 6mm wide, through the depth of the tile and bed, filled with strip filler materials and finished with sealant.

4. Ceramic Tile Fixinga. Tiles shall be fixed by bedding on a bed of cement and sand mortar, at the discretion of

the Contractor who shall be solely responsible for making any adjustments including dimensional adjustments, to the satisfaction of the Contracting authority, which his choice necessitates.

b. Ceramic skirting shall be fixed as ceramic tiles.5. Grouting

The tiling shall be grouted on completion with epoxy of a colour to match the tiles, ensuring, that all joints are completely filled.Surplus grout is to be cleaned off the face of the tile and adjoining surfaces and the tiles are to be carefully cleaned.

6. Final CleaningThe final polished surface is to be washed with hot water and alkali-free detergent, and left clean and protected from damage to the satisfaction of the Contracting authority.

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CERAMIC WALL TILES

A. ScopeThis Specification covers glazed ceramic wall tiling in selected sizes and colours.

B. Performance and Standards

1. The work shall comply with BS 5385, Code of Practice for Wall Tiling, Part 1, and Part 2.2. Tiles shall comply with BS 1281.

C. Related ItemsJoint Sealers Ceramic Floor Tiles

D. Submittals1. Samples of Tiles

For each specified type or colour of tile the Contractor shall supply for the Contracting authority's approval a panel of tiles not less than 300mm square stuck onto a backing board of hardboard or similar and grouted with the specified grout.The Contractor shall also submit full size samples of each tile accessory.

2. Sample of WorkBefore the generality of the work is commenced carry out one area of each type (not necessarily each colour) of tiling, not less than 4m sq. which, when approved, shall stand as the minimum standard of workmanship to be achieved. Where appropriate in the context of the work and as may be required by the Contracting authority the sample shall include a length of at least 1m of sealant jointing. The remainder of the work shall not proceed before approval has been given to this sample.

3. DataCopies of the tile and tiling materials manufacturer's data and fixing recommendations or instructions shall be handed to the Contracting authority, and tile fixing shall not be at variance with these instructions without the written agreement of the Contracting authority.

E. Product Handling1. Tiles

The tiles shall be transported and stored in the manufacturer's cartons with seals unbroken and labels intact until time of use.Tiles shall at all times be handled and stored to prevent damage and soiling.

2. Pointing Mortar and GroutMaterials shall be transported and stored in the manufacturer's sealed containers until required for use and shall at all times be handled in accordance with the manufacturer's instructions.

3. Cement and Sand MortarCement and sand mortar shall be as specified in 04220 Precast concrete blockwork.


F. Materials1. Glazed Ceramic Wall Tiles

a. SourceAll tiles shall be obtained from “Flaviker” Marazzi”, Vaccari or approved equal. Each type of tile shall be obtained from a single manufacturer together with all fittings and specials relating to that type.

b. TilesThe tiles shall be to BS 1281 with cushion edges and spacer lugs. Fittings and specials shall be to BS 1281: round edge fittings shall be as Fig. 1 in the BS.All internal and external corner tiles whether vertical or horizontal shall be round edged.

c. SizesSize shall be as indicated on the drawings.or as otherwise agreed with the Contracting authority. Tolerances shall be in accordance with BS 6431.

d. Colours, Finish and PatternsColours, finish and patterns for ceramic wall tiles shall be selected by the Contracting authority and shall accurately match approved samples.

e. DefectsThe tiles shall be entirely free from defects and blemishes.

2. MortarCement and sand mortar shall be 1:3.The cement shall be portland cement to BS12. The water shall be clean, free of impurities and the least needed for proper workability.The bedding mortar shall consist of a mixture not richer than 1 part cement to 3 parts sand and not leaner than 1 part cement to 4 parts sand, and shall be not less than 12mm thick. The sand for the mortar shall be in all respects in accordance with the requirements of BS 1200.

3. GroutThe ceramic tiles grout shall be determined by the Contracting authority. The grout shall be used in accordance with the instructions of the manufacturer. The Contracting authority shall determine what grout will be used if there was a danger of damp penetration.

4. Tiling adhesive shall be a thin-bed PVA adhesive Type BCR or approved equal if recommended.


a. Manufacturer's recommendations are to be strictly followed for all products and materials.

b. StandardsComply with the requirements of BS 5385, Part 1.

c. Setting OutThe tiling shall be set out strictly in accordance with the Contracting authority's drawings or approved Contractor's drawings.Cut tiles shall be kept to a minimum and shall not be less than half the width of a full tile. Joints shall be truly horizontal and vertical and horizontal joints in adjacent walls shall align. All joints shall be 1.5mm wide or as determined by spacers.


d. ToleranceMaximum permissible gap under a 2m straight edge shall be 3mm.Owing to variations which may occur in tile sizes within the limits of BS 6431, the Contractor shall be responsible for sorting all tiles into batches after delivery to site and before any fixing is commenced. Each batch shall contain tiles of the same size and the tiler shall apportion the batches to ensure that only tiles of one size are used in any one room.

2. Backgrounda. Acceptance of Background

Before fixing tiling ensure that the background is:i. Adequately true and level to achieve specified tolerances.

ii. Free from contamination and loose areas.iii. Adequately prepared to give a good bond.

b. Tiling on PlasterTiles may be applied to plaster surfaces only in the case of small areas where agreed by the Contracting authority. Such areas shall include splash backs to sanitary fittings where the area of tiles does not exceed 1m square.Plaster surfaces shall be cleaned before tiling, in accordance with the manufacturer’s instructions.

c. Drying OutBefore fixing tiles ensure that concrete and masonry backgrounds have been exposed to the air for not less than four weeks and are thoroughly dry.

3. Fixinga. Preparation of Tiles

Tiles which are dirty or have a coating of dust shall be cleaned with clean water, but must be entirely dry before application of adhesive.

b. Floated and Buttered Thin Bedi. Apply adhesive to dry background as a continuous float coat, using a plasterer's

trowel having 6mm x 6mm notches at 25mm centres.ii. Apply a thin, even coat of adhesive to the backs of dry tiles.

iii. Press tiles onto bedding with a twisting/sliding action to give a finished bed thickness of not more than 3mm.

iv. Ensure solid bedding under the whole tile and adhesion over the whole of the background and tile back.

c. AdjustmentMake any necessary adjustment to tiles within 10 minutes of fixing.

d. Cleaning OffRemove surplus mortar as soon as bedding is complete. Do not disturb tiles.

4. GroutingWhen bedding has set sufficiently to prevent disturbance of tiles, but not more than 7 days after fixing, all joints are to be grouted by working ceramic tile grout in so that the joint is completely filled. Finish flush and thoroughly clean off surplus grout as the work proceeds using a damp cloth. Tool joints smooth.

5. FinishingThe finished work shall be left clean and free from cement, plaster, paint, dust or any other


marks or imperfections; cleaning down must not be carried out with materials which will scratch or in any way impair the finished work.Final polishing shall be done with a soft dry cloth.

6. ProtectionThe Contractor shall adequately protect the tiling from all damage, howsoever likely to be caused, until the handing over. Any damage which does occur shall be made good by the Contractor at his own expense. The whole of the work shall be prepared for handover in a state satisfactory to the Contracting authority.


PRECAST TERRAZZO

A. Scope

1. The work under this heading consists of the supply, delivery and installation of precast terrazzo floor tiles.

2. The terrazzo finish shall consist of Italian marble or equal approved chips and tinted cement,. 25 mm thick, or as shown on the drawings or Bill of Quantities.

B. Performance and StandardsThe work shall be carried out to BS CP 204 Part 2, and shall conform with the latest recommendations of the British National Federation of Terrazzo-Mosaic Specialists.Precast terrazzo tiles shall comply with BS 4131, and shall be laid in accordance with BS CP 204.

C. Related ItemsBeds and screeds

D. Submittals

1. Samples Terrazzo tilesThe Contractor shall submit for approval two tiles of each of the colors selected.

2. Samples of Terrazzo chippingsSamples of the chippings used in the sample shall be submitted for approval.

E. Product handling

1. Transit and DeliveryAdequate protection shall be given to the tiles for transit purposes to avoid chipping of arises, cracking, and contact with any material that might cause discoloration.

2. Stacking Tiles on SiteThe recommendations of Appendix C of BS 4131 shall be followed

F. Materials1. Tiles

The tiles shall be hydraulically pressed terrazzo floor to BS 4131.2. Sizes

Terrazzo floor tiles and skirting shall be as indicated in the Bill of Quantities.3. Marbles aggregate

The marble aggregate shall conform to BS 4131 para 5.1 and shall consist of 2 parts size 3-4 mixed with an equal or greater proportion of 5-7mm, to 1 part 10-15mm. The marble shall be approved Italian marble or other equal approved.

4. Colored cementThe colored cement for the terrazzo topping of the tile shall be approved, either white or to the colour required as may be approved by the Contracting authority when considering samples.

5. Terrazzo facingThe facing of the tile shall be not less than 6mm and not more than 10mm consisting of a mix


not richer than 2 parts aggregate to 1 part cement by parts aggregate to 1 part cement by volume as described in 3 and 4 above.

6. Tile BackingThe backing shall consist of 3 parts aggregate to 1 part cement.The aggregate shall be sharp clean washed pit sand as BS 882, Class A, graded from 5mm down, and crushed shingle conforming to BS 882 requirements for coarse aggregates.The cement shall be Portland Cement to BS 12. The water shall be clean, free of impurities and the least needed for proper workability.

7. Bedding mortarThe bedding mortar shall consist of a mixture not richer than 1 part cement to 3 parts sand and not leaner than 1 part cement to 4 parts sand, and shall be not less than 12mm thick. The sand for the mortar shall be in all respects in accordance with the requirements of BS 1200. The cement shall be Portland Cement to BS 12. The water shall be clean free of impurities.

8. Joint filling mortarGrouting of joints shall be with mortar using cement of the same color as that used in the manufacture of the tiles.

9. BonderThe bonder shall be PVA based adhesives.

10. Sand and aggregate for screedsThe sand for rendering screeds shall comply with BS 1199 : 1955, Table 1 and shall be clean, sharp.All sand be free from loam or other impurities.Crushed shingle shall be clean washed, conforming to the requirements of BS 882 for coarse aggregate and be graded 3/8” down.

11. Abrasive material shall be caoutchouc bonding on treads with special adhesive as manufacturer’s instructions and to the approval of the Contracting authority.


The floors shall be laid in accordance with BS CP 202, and 204.2. Floor thickness

The overall thickness from structural concrete slab to finished surface of terrazzo tile on floors shall be 100mm.

3. Preparation of baseThe base surface shall be thoroughly clean, free from dust, oil, plaster, lime or other foreign materials immediately before tile laying is commenced.

4. Terrazzo tile fixingTiles shall be fixed by bedding on mortar bed which may be bonded to the screed base or alternatively laid on a separating layer, at the discretion of the Contractor who shall be solely responsible for making any adjustments including dimensional adjustments, to the satisfaction of the Contracting authority, which his choice necessitates.

5. Mortar bed methoda. If the bed is bonded to the screed the bonding agent as specified shall be applied in

accordance with the manufacturer’s instructions and the mortar bed shall be laid to a thickness not less than 12mm and not more than 20mm, and in other respects in


accordance with clause 4.2.2 of BS CP 202.b. If the bed is laid on a separating layer, this layer shall be laid with joints lapped not less

than 100mm. The mortar bed shall be approximately 20mm + or -5mm, and shall be laid in accordance with clause 4.2.3 of BS CP 202.

6. Precast skirting fixingPrecast skirting shall be bedded on 10mm thick bed of cement and sand not richer than 1:3 and not leaner than 1:4.

7. GroutingThe tiling shall be grouted on completion with grout of neat cement of a color to match the tiles, ensuring that all joints are completely filled.Surplus grout is to be cleaned off the face of the tile and adjoining surfaces and the tiles are to be carefully cleaned.

8. CuringCuring shall be carried out as recommended in BS CP 202.

9. PolishingPolishing shall be carried out in two operations with approved graded abrasives and plentiful supply of clean water. All holes and open pores disclosed shall be made good with matching cement mortar.

10. Final cleaningThe final polished surface is to be washed with hot water and alkali-free detergent, and left clean and protected from damage to the satisfaction of the Contracting authority


GYPSUM BOARD FALSE CEILING

A. Scope1. This section covers suspended ceilings consisting of panels complete with suspension system

and all necessary trims and accessories.

B. Performance and Standards1. Suspension System

The suspension system shall be designed to provide substantial support for the ceiling finish and associated light fittings, and for grilles, margins and any item forming part of the finished ceiling, in order that the soffit of the ceiling remains permanently true and level.

2. British StandardsAll materials shall comply with the relevant current British Standards. Workmanship shall be in accordance with BS CP 290.

C. Related ItemsCeiling Suspension Systems

D. Submittals1. Samples

The Contractor shall supply samples for approval of each size and type and of such other component members as may be called by the Contracting authority.

2. Shop DrawingsThe Contractor shall submit for approval shop drawings showing all necessary details, including trimming for light fittings, grilles, laboratory service boxes, etc … perimeter details, and all suspension and fixing details.The Contractor shall submit also layout drawings for each type of room or space which has a suspended metal ceiling.Drawings shall be submitted so that they can be cleared by the Contracting authority as may be required to progress the main works and specialist’s work, but in any event not late than 21 working days before the work is put in hand.

E. Product Handling1. Protection and Handling Generally

Prevent distortion or damage or panels and other components during transit, handling, storage and fixing.Store under cover.Protect metal finishes as specified in Section 05030.Prevent contact with wet plaster or cement or any other deleterious matter.Provide protective coverings as necessary and remove all protection on completion.

F. Materials1. Gypsum board

Shall be panel board tapered edge type 20 mm thick conforming to ASTM C36 Type Regular. Platres Lafarge Co. or approved equal.


2. Downward demountable concealed grid egg crate open cell ceiling folded aluminium blade formation to polyester powder paint color as approved by the Contracting authority, installed on the manufacturer’s proprietary suspension system consisting of hanger runners, cross runners and patented spring clips into which the modular panels are located. Material shall be Damper Hunter Douglas or equivalent.The Contractor will be responsible for ensuring selected light fittings are compatible for installation into the specified suspended ceiling system.

3. Access to Ceiling VoidAll units must be demountable without disturbance to adjacent units, by means of a key, without distortion or risk of damage to the panel or tile.

4. AccessoriesThe system is to be complete with all necessary accessories including infill channels, perimeter trim, etc., as may be shown on the Contracting authority's or manufacturer's approved drawings.

5. SuspensionThe suspension system shall consist of angle hangers or suspension wires, primary suspension channels and main runners, with all necessary clips. The main runners shall be of the split 'T' type to give a fully concealed fixing system. All members shall be zinc sprayed, sherardized or given other approved protective coating.


The Contractor shall set out the whole ceiling in accordance with the approved drawings, in such a way that close tolerances are achieved. The deviation from the nominal shall not be in excess of + or - 3mm over 4m length, non-accumulative. Method of erection and all workmanship shall be in accordance with the instructions of the manufacturer of the ceiling system, and with the relevant clauses BS CP 290.

2. SuspensionThe method of fixing hangers to the structural soffit shall be agreed with the Contracting authority.

3. Additional Loads on Suspension SystemLight fittings, ventilation diffusers, etc., are to be supported on the ceiling suspension at ceiling level and the Contractor shall allow for substantial support for these loads when designing the system. He shall liaise with the manufacturers of the various items so that they are compatible with the ceiling system, and he shall incorporate the necessary runners, lugs or other support to fix or rest on the ceiling suspension.

4. Gypsum Boarda. Gypsum board thickness at suspended ceiling and bulkhead shall be 12.7mm thick.b. Carefully cut gypsum boards to the required sizes with cut edges and ends of the board

sandpapered to obtain neat jointing.c. Apply gypsum board with the reverse side against the framing members.

Separate boards shall be in moderate contact. In no cases shall the boards be forced into place. At interior and exterior corners, the cut edges of the boards shall be concealed by overlapping them with the abutting boards. Stagger gypsum board so that the corners of any four boards will not meet at the same point.


d. Apply gypsum board with the long dimension at right angles to the framing members. Use horizontal application unless vertical application results in fewer joints.

5. Installation of PanelsAll wet trade activities shall be completed and dried out before panel installation is commenced.

6. Cut Ends, etc.All cut ends and any damage to protective coatings shall be made good before fixing to ensure that no subsequent staining will occur on the finished work and no corrosion will occur in the ceiling void or on any member.

7. Fixings, MiscellaneousThe panel and tile fixing system is an invisible one; no visible fixing will be permitted unless there is no alternative; if unavoidable, screws shall be countersunk with flat Phillips head, stove enameled to match the panel or tile. All concealed screws and bolts shall be sherardized and of sufficient strength for their purpose.The used of timber is to be avoided where possible, but if necessary, shall be in all respects as specified in previous section.

8. Cleaning, Protection and Patchinga. Be responsible for cutting and patching of defects appearing in the gypsum board work,

after the work of other trades has been completed, regardless of how, or by whom, the damage was caused. Patching shall be neatly and properly made to match the original work. Portions of the work damaged beyond repair shall be removed and replaced with new material at no additional cost to the Owner.

b. Clean and repair surfaces soiled or damaged in connection with the work of thisc. Section to the approval of the Contracting authority. Pay the cost of replacing finishes or

materials that cannot be satisfactorily cleaned.d. Upon completion of the work, remove debris, equipment and excess material resulting

from the work of this Section from the site.e. Protect completed work from damage through construction period.


SUSPENDED CEILING SYSTEMS

A. Scope1. This section covers suspended ceilings consisting of Aluminum panels and strips complete

with suspension system and all necessary trims and accessories.






The Contractor shall supply samples of sizes and type and such other members as may be called by the Contracting authority.

2. Shop DrawingsThe Contractor shall submit for approval shop drawings showing all necessary suspension and fixing details, including trimming for light fittings, grilles, etc …


Prevent distortion or damage or panels and other components during transit, handling, storage and fixing.Store under cover.Protect metal finishes as specified in previous Sections.Prevent contact with wet plaster or cement or any other deleterious matter.Provide protective coverings as necessary and remove all protection on completion.

F. Materials1. False ceilings

Metal strips paneling, or cell shall be of thickness 0.5 to 0.6mm, lacquered aluminum strips and panels with sealed joints as manufactured by metal screen, Sadi metal, rechter or equal approved by the Contracting authority.Sizes to be as per drawings and finishing schedule.

2. Access to Ceiling Void.All units must be demountable without disturbance to adjacent units, by means of a key, without distortion or risk of damage to the panel or tile.

3. Accessories


The system is to be complete with all necessary accessories including infill channels, perimeter trim, etc., as may be shown on the Contracting authority's or manufacturer's approved drawings.

4. SuspensionThe suspension system shall consist of angle hangers or suspension wires, primary suspension channels and main runners, with all necessary clips. The main runners shall be of the split "T" type to give a fully concealed fixing system. All members shall be zinc sprayed, sherardized or given other approved protective coating.





4. InstallationEnsure that only boards bearing the same batch number are used in any one space. All wet trade activities shall be completed and dried out before panel installation is commenced.


6. Fixings, MiscellaneousThe panel and tile fixing system is an invisible one; no visible fixing will be permitted unless there is no alternative; if unavoidable, screws shall be countersunk with flat Phillips head, stove enameled to match the panel or tile. All concealed screws and bolts shall be sherardized and of sufficient strength for their purpose.The used of timber is to be avoided where possible, but if necessary, shall be in all respects as specified in section 06400.

7. Cleaning, Protection and Patchinga. Clean and repair surfaces soiled or damaged in connection with the work of this Section

to the approval of the Contracting authority. Pay the cost of replacing finishes or materials that cannot be satisfactorily cleaned.

b. Upon completion of the work, remove debris, equipment and excess material resulting from the work of this Section from the site.


c. Protect completed work from damage through construction period.SUSPENDED CEILING SYSTEMS

A. Scope1. This section covers suspended ceilings consisting of Vinyl panels boards complete with

suspension system and all necessary trims and accessories.






The Contractor shall supply samples of sizes and type and such other members as may be called by the Contracting authority.

2. Shop DrawingsThe Contractor shall submit for approval shop drawings showing all necessary suspension and fixing details, including trimming for light fittings, grilles, etc …


Prevent distortion or damage or panels and other components during transit, handling, storage and fixing.Store under cover.Protect metal finishes as specified in Section 05030.Prevent contact with wet plaster or cement or any other deleterious matter.Provide protective coverings as necessary and remove all protection on completion.

F. Materials1. Shall be Acoustic vinyl panel board tiles 60 × 60cm as manufactured by Hunter Douglas or

equal or as approved by the Contracting authority.2. Access to Ceiling Void.

All units must be demountable without disturbance to adjacent units, by means of a key, without distortion or risk of damage to the panel or tile.

3. AccessoriesThe system is to be complete with all necessary accessories including infill channels, perimeter trim, etc., as may be shown on the Contracting authority's or manufacturer's


approved drawings.4. Suspension

The suspension system shall consist of angle hangers or suspension wires, primary suspension channels and main runners, with all necessary clips. The main runners shall be of the split "T" type to give a fully concealed fixing system. All members shall be zinc sprayed, sherardized or given other approved protective coating.





4. InstallationEnsure that only boards bearing the same batch number are used in any one space. All wet trade activities shall be completed and dried out before panel installation is commenced.


6. Fixings, MiscellaneousThe panel and tile fixing system is an invisible one; no visible fixing will be permitted unless there is no alternative; if unavoidable, screws shall be countersunk with flat Phillips head, stove enameled to match the panel or tile. All concealed screws and bolts shall be sherardized and of sufficient strength for their purpose.The used of timber is to be avoided where possible, but if necessary, shall be in all respects as specified in section 06400.

7. Cleaning, Protection and Patchinga. Clean and repair surfaces soiled or damaged in connection with the work of this Section

to the approval of the Contracting authority. Pay the cost of replacing finishes or materials that cannot be satisfactorily cleaned.

b. Upon completion of the work, remove debris, equipment and excess material resulting from the work of this Section from the site.

c. Protect completed work from damage through construction period.


STONE

A. Scope1. Work Included

a. The Contractor shall furnish and install all stone and Related Work as required by the drawings and/or herein specified, generally as follows:Stone exterior wall facing, Paving and where indicated on the drawings.

B. Performance and StandardsRefer to Masonry Mortar Masonry accessories

C. Related ItemsMasonry Mortar Masonry accessories

D. Submittals1. Shop Drawings

a. The Contractor shall prepare and submit shop and setting drawings of all work included herein for the Contracting authority's approval.

b. Shop and setting drawings shall show in detail all sizes, arrangement of joints, and all provisions for anchoring and soffit suspension.

c. Shop drawings shall be submitted as directed by the Contracting authority.d. All installed materials shall conform to the approved corresponding shop drawings.

2. Samplesa. Samples of all materials proposed to be used shall be submitted for approval.

Samples of stone shall show the extremes of variations in quality, texture, colour and finish. Materials incorporated in the finished work must be within the approved ranges of the approved samples or will be rejected.

b. Samples shall be submitted as directed by the Contracting authority.c. Field mock-up shall be erected on the site where directed by the Contracting authority.

The panels shall be of sizes directed by the Contracting authority and shall include joint profile and mortar colour, and anchoring. The mock-up panels shall be immediately revised by the Contractor during the presence of the Contracting authority, if the Contracting authority so directs, until each panel is approved by the Contracting authority. All installed stone construction shall conform to approved mock-up panels. The mock-up panels shall remain intact until their removal is directed by the Contracting authority, and subsequently, shall be removed by the Contractor.

3. MeasurementsThe Contractor shall take all necessary measurements as required to assure proper fabrication and installation of the work of this section.

4. Coordination


All work of this section shall be closely coordinated with the work of other sections whose work affects or is affected by the work specified in this section.

E. Materials1. Stone

a. Stone shall be natural and as indicated on the drawings, and to the approval of the Contracting authority.

b. The actual stone used shall be sound, of uniform texture, and shall be free from holes, seams, shakes, clay pockets, spalls, stains, starts, and other defects which would impair the strength, durability or appearance of the work, as determined by the Contracting authority.

c. Inherent variations characteristic of the stone and the quarry from which the stone is obtained shall be brought to the attention of the Contracting authority at the time the samples are submitted for approval, and such variations shall be subject to approval of the Contracting authority.

d. All stone and Granite stone shall be selected for background colour, veining, marking and matching, and shall run in even shades.

e. The Contractor shall cut all stones to sizes required by the drawings and as approved by the Contracting authority.

2. Mortar Setting Materialsa. Cement shall be white cement conforming to ASTM C-150, Type 1, latest edition.b. Lime shall be either hydrated or quicklime, Hydrated lime shall conform to ASTMC-207,

latest edition, and shall be at least 92% hydrated quicklime shall conform to ASTM C-5, latest edition.

c. Lime putty shall be stiff mixture of lime and water, kept moist until used. Putty made from quicklime shall be slaked and allowed to soak before using as recommended by the manufacturer of the lime used.

d. Sand shall conform to ASTM C-144, latest edition.e. Water shall be clean and fresh, from the water supply system.

F. Workmanship1. Examination of Surfaces

a. All surfaces which will receive the work of this section shall be carefully examined prior to the installation of the work. Starting installation on any surface shall be construed as an acceptance of such surface and acceptance of all prevailing conditions, and as a waiver of any subsequent claim to the contrary.

2. Stonea. All stone shall be accurately cut to the shapes, dimensions and profiles indicated on the

drawings and in conformance with the approved shop and setting drawings.b. Exposed surface tolerance shall not exceed 3mm in 2.50 meters.c. Holes shall be cut in all stone weighing more than 100 pounds unless other methods of

raising stone not requiring holes. No holes shall come closer than 50 to exposed faces of stone.

d. Joints of all stone shall be full and square for full thickness of the stone. All concealed surfaces of joints shall be sawed.

e. The backs of all stone shall be sawed or roughly dressed to approximately true planes.


f. All sawed surfaces shall be cleaned of rust stains and iron particles.g. Stone wall facing shall be natural finish as shown on the drawings. Jointing, coursing,

setting patterns and finish of stone shall be as shown on drawings.h. Joints within stone shall be of thickness indicated and shall have a "raked" profile.i. Joints shall be 1/16" thick and shall be flush.j. Stone shall be set in mortar, and all joints shall be filled with mortar and the back of the

stone shall be treated with mortar repellent paint.k. When setting stone, adjacent pieces shall be selected for similarity in colour, veining and

matching.l. Stone shall be set accurately, true to line, plumb and level.m. All exposed surfaces shall be free from waves, and faces of stone in the same plane shall

be flush at joints. Arises shall be sharp and true, square and continuous with adjoining arises.

n. Partially completed stone work shall be thoroughly covered when work is interrupted to prevent water and moisture from entering behind stone.

o. The Contractor shall have a thoroughly competent stone superintendent in charge of the stone at all times during the handling and setting of stone.

p. Stone shall be so delivered and handled to protect it from damage at all times.The patching or hiding of defects shall not be permitted. Stone chipped or stained on the surface shall be redressed or cleaned to remove all traces of such defects before it is set in place, or new stone shall be furnished as directed by the Contracting authority.

q. Walls to receive stone cladding shall be plastered with cement mortar if that shown on drawings. This plaster shall be 10mm thick and scratched while it is green.

3. Mortar Jointsa. Mortar shall consist of one part of non-staining white cement, one part hydrated lime,

and four parts fine sand or five parts coarse sand.b. All mortar for joints shall be coloured to match the stone with which it is used.

4. Protectiona. All work of this section, and related adjacent construction, shall be protected from

damage, staining, or other imperfections at all times. Damaged, stained, or imperfect materials shall be repaired or replaced as directed by the Contracting authority, to the Contracting authority's satisfaction, without cost to the Owner.

b. Use all reasonable means to keep the exposed surface of stone while being laid and particularly to keep it free from and/or caulking compound.

c. Galvanized steel cramps and hooks to the braking wall shall be use as directed by the Contracting authority.

5. Cleaninga. All exposed surfaces of the work of this section and related adjacent surfaces shall be

maintained in a clean condition, and upon substantial completion of the Contract shall be thoroughly cleaned to the satisfaction of the Contracting authority.


MARBLE

A. ScopeThis section covers the following:

The execution of Marble floors, skirting, treads, risers and threshold, as shown on drawingsAll shall be to the satisfaction of the Contracting authority.

B. Performance and StandardsThe work shall be carried out in accordance with BS CP 202, including all current amendments.

C. Quality AssuranceAll marble shall be provided from a single source from a single quarry to ensure consistency of quality and color.

D. Related ItemsPortland Cement Plaster

E. Submittals1. Shop Drawings

a. The Contractor shall prepare and submit shop and setting drawings of all work included herein for the Contracting authority's approval.

b. Shop and setting drawings shall show in detail all sizes, arrangement of joints, and all provisions for anchoring.

c. Shop drawings shall be submitted as directed by the Contracting authority.d. d. All installed materials shall conform to the approved corresponding shop drawings.

2. Sample of MarbleThe Contractor shall provide an adequate number of samples of the specified marble, to demonstrate the range of color and surface marking that will obtain in the finished work. When approved by the Contracting authority the samples shall be so marked and retained on site, and the work will be expected to lie within the demonstrated range.Submit sample of colored mortar.

3. DrawingsThe Contractor shall submit an approval layout drawings of any pattern required or tread and riser units to staircases.

4. MeasurementsThe Contractor shall take all necessary measurements at the building as required to assure proper fabrication and installation of the work of this section.

5. CoordinationAll work of this section shall be closely coordinated with the work of other sections whose work affects or is affected by the work specified in this section.


F. Materials1. Marble

The marble shall be of type “BOTTICINO” or similar and to the approval of the Contracting authority .

2. SizesAs shown on drawing or B.O.Q.

3. FinishExposed surfaces shall be polished on completion for floors.

4. BondingCement and sand mortar, 1:4-6.

5. GroutThe grout shall be to an approved color, from an approved manufacturer.


The manufacturer's recommendations shall be strictly followed for all products and materials.2. Drying Out and Preparation of Base

Before laying flooring ensure that the base has been allowed to dry by exposure to the air for not less than two weeks. Ensure that the base is adequately true and level to achieve specified tolerances, and free from contamination and loose areas.

3. Bedding for slabsSpread, level and compact white cement: sand mortar, 1:4-6 of stiff plastic consistency, 20mm thick, and allow any free surface water to dry.

4. SlurryButter the backs of the marble slabs with a neat cement slurry 2-3mm thick.

5. The Contractor shall have a thoroughly competent marble superintended in charge of the marble at all times during the handling and setting of marble.

6. Marble shall be so delivered hand and handled to protect it from damage at all times.7. When setting marble, adjacent pieces shall be selected for similarity in color, veining and

matching.8. Marble shall be set accurately, true to line, plumb and level.9. All mortar for joints shall be colored to match the marble with which it is used.10. Laying Slab

Laying of slabs shall be executed by an experienced skilled.Remove with a damp cloth any bedding material brought to the surface at joints as soon as the slab has been positioned.

11. FinishTreads and risers units and thresholds shall be delivered polished, while floor tiles shall be polished on completion.

12. TrafficAllow no traffic on the floor until 2 days after completion of laying and jointing, and then only light traffic for a further 5 days.



RESILIENT FLOORING

A. Scope

1. This section covers the Resilient flooring sheet roll approx. 2300x200cm complete including accessories.

B. Performance and StandardASTM – American Society for Testing and Materials

1. ASTM D 257 Test Methods for DC Resistance or Conductance of Insulating materials.2. ASTM E 84 Test for Surface Burning Characteristics of Building Materials.

C. Submittals1. Submit shop drawings and product technical data2. Provide seaming plan and location of joints3. Provide product data on specified products, describing physical and performance

characteristics, sizes, patterns and colors available.4. Submit 2 samples, in actual size, illustrating color and pattern for material specified.5. Submit manufacturer’s installation instructions.6. Submit cleaning and maintenance data include maintenance procedures, recommended

maintenance materials, and suggested schedule for cleaning, stripping, and re-waxing.

D. Transportation, Handling and Storage1. Deliver materials to site in original sealed packages or containers, clearly marked with the

Manufacturer’s name or brand, type and color, production run number and date of manufacture.

2. Store materials in weatherlight and dry storage facility. Protect from damage, from handling, weather, and construction operations before, during and after installation.Guarantee

3. Submit a written guarantee signed by Contractor and Manufacturer for a period of 2 years from the date of substantial handover. Guarantee shall cover repair and replacement of defective material and workmanship.Quality Assurance

4. Install resilient flooring and accessories in strict compliance with manufacturer recommendations and instructions.

5. Install resilient flooring and accessories after other finishing operation, including painting, have been completed.

6. Do not install resilient flooring on Terrazzo tiles until tiles have been cured and are sufficiently dry to achieve bond with adhesive as determined by Manufacturer’s recommended bond and moisture test.

E. Materials1. Resilient Flooring Materials

The resilient flooring shall be anti-static slip retarded, anti-acid resistant of uniform thickness as manufactured by "Tarket-Type Souplan AS", homogenous resilient static control flooring, conducts static electricity, where indicated on the finishing schedule and optima,


homogenous vinyl flooring classic Traventine look, where indicated on the finishing schedule or approved equal and to the approval of the Contracting authority.Vinyl flooring rolls shall be in compliance with the following requirements:Size : sheets (Rolls) 200x2300cm meters approx. unless otherwise indicated on drawings.Total thickness : unless otherwise indicated on drawings, total thickness shall be 2 mm.Resistant to static electricity.Abrasion / Thickness Loss: 0.15 mm maximum; in compliance with DIN 51963. Flame spread: glass B1 in accordance with DIN 4102 as well as BS 476: Part 7. Chemical Resistance : resistant; in compliance with DIN 51958.Electrical Resistance : 108 ohmColours shall be selected by the Contracting authority and shall accurately match approved samples.

2. AdhesiveThe adhesive for vinyl fixing shall be as manufactured by the manufacturer conforming to BS5980 as a Type 1 Class AA adhesive.

F. Workmanship1. General

All workmanship shall be fully in accordance with BS 5385, Parts 1 and 2. manufacturer's instructions are to be strictly followed for all products and materials.

2. Setting OutSetting out shall be in accordance with the drawings. Level setting out lines shall be established.

3. TolerancesThe maximum permissible gap under a 2m straight edge shall be 3mm, except in the case of the marble vinyl to the waterfall where a degree of roughness shall be deliberately achieved in accordance with approved sample, which maintaining overall levels.

4. BackgroundsThe Contractor shall ensure that backgrounds are sufficiently true to permit the finished work to achieve the specified tolerances, and free from contamination or loose areas. Background shall be Terrazzo tiles 30x30x25cm..

5. Vinyl FixingThe vinyl is to be fixed by the thin-bed method as described in BS 5385.The bedding adhesive shall be evenly spread to a thickness of 2mm. Immediately before applying the vinyl sheets, pre-grout the backs of the sheets. There shall be no voids in the bedding layer. The vinyl shall be firmly pressed down into the bed: adjacent sheets shall be flush, and the outline of sheets shall not be detectable in the finished work.Provide brass strips of 5mm wide x 10mm thick where vinyl tiles are in junction with ceramic tiles.

6. FinishingLeave the work clean and free of excess adhesive or any other alien matter to the complete satisfaction of the Contracting authority.



PAINTING

A. Scope1. This section includes the Site Painting of all interior and exterior items and surfaces

throughout the project except as otherwise indicated or work having a natural specified finished surface. The term 'Painting' in this context covers all coating and finishing systems and their component or accessory materials whether used as prime, intermediate or finish coats, and this Specification includes the Site preparation of surfaces by cleaning, roughening, rubbing down, stopping and filling, or other preparatory process all as specified hereunder.All exposed items and surfaces shall be painted and all materials that require a protective coating shall be painted except where indicated on drawings or schedules as being unpainted, work having a natural specified finished surface, and work covered in the following paragraph.The work covers the painting and protection of all plant, apparatus, pipework and equipment installed under the Mechanical and Electrical Work.

B. Performance and Standards1. All painting systems shall be entirely satisfactory in terms of compatibility of constituent to

substrate, adhesion, coverage, color-fastness and durability in the climatic and other conditions pertaining to the site within the limits of accepted good practice.

2. Work in this section shall comply with: BS CP 231 Painting of Buildings.BS CP 3012 Cleaning and Preparation of Metal Surfaces. BS 3900 Methods of Tests for Paints.BS 5493 Code and Steel Structures against corrosion.

3. All materials shall conform to applicable British Standards whether referred to in this Section or not.

C. Related ItemsMetal Finishes

D. Submittals1. Manufacturer

The names, official addresses and technical brochures of the paint manufacturers, giving properties of materials, shall be submitted to the Contracting authority for clearance, prior to ordering.

2. Manufacturer's InstructionsProvide the Contracting authority with copies of the manufacturer's application instructions and call his attention to any discrepancy between these instructions and the Specification. Obtain the written concurrence of the Contracting authority and manufacturer as appropriate to any proposed change in either Specification or manufacturer's instruction.

3. CoordinationEnsure that the paint manufacturer is aware of and accepts the substrate to which his product is applied, in particular, to ensure compatibility, where the surface to be painted has already received a coating such as shop-applied primer. Provide barrier coats over incompatible primers or remove and reprime as required.

4. Color Samples


After selection but prior to application provide samples of each color on cards 500 x 500mm and obtain the Contracting authority's approval thereof.

5. Control SamplesComplete representative sample areas of each type of coating as directed by the Contracting authority, including preparation of surfaces. Obtain approval of appearance before proceeding. Provide, for the Contracting authority's inspection, lighting conditions such as those under which the work will normally be seen.

6. TestingArrange for any tests called for by the Contracting authority to be carried out to determine compliance with the Specification, and submit the results of the tests to the Contracting authority. Permit coating manufacturers to inspect work in progress and to take samples of their products from Site if required. The results of any tests carried out by or on behalf of manufacturers shall be submitted to the Contracting authority.

7. CertificatesThe Contractor shall submit test certificates in respect of any fire-retardant coatings he proposes to use.

E. Product Handling1. Delivery and Labeling

Coating materials and all materials used in painting shall be delivered to Site in sealed undamaged containers, clearly labeled with the following information:a. Type of material.b. Manufacturer's name, brand name, if any, and identification related to colour schedules.c. Manufacturer's batch number and date of manufacture.d. Contents by volume for major pigment and vehicle constituents.e. Manufacturer's intended use.f. Thinning and application instructions.

2. Order of UseBatch deliveries of coating materials shall be dated for use in order of delivery which shall reflect the order of manufacturing dates.

3. Container SizePaints other than water-based and bituminous paints shall be delivered in containers not exceeding 5 liters capacity.

4. StorageStore materials in a clean, dry area protected from extreme temperatures. Keep storage space neat and accessible at all times. Protect floors from paint spillage. Discard and remove from Site any paints in containers which have received any but superficial damage.

5. Pre-Installation Protection of Mechanical and Electrical EquipmentAll ferrous apparatus and equipment shall be provided at the manufacturer's Works with a protective coat of primer paint to minimize corrosion prior to installation.All bright, polished machined parts, chrome-plated or similarly finished components shall be wrapped with self-adhesive plastic which shall be retained on Site by the Contractor, until the equipment is commissioned. The Contractor shall then remove the wrapping, clean up and re-instate the original finish.


F. Material1. General

Coating materials shall be obtained from one approved manufacturer only for each type of material. All coats from primer to finishing coat in a system shall be from the one manufacturer.

2. Filling, Stopping, Cleaning Materialsa. Paint strippers, abrasive papers and blocks, cleaning agents, etching solutions, mould

inhibitors, rust inhibitors, size, stopping, knotting, fillers and other ancillary materials shall be the best of their respective kinds, used as recommended by their respective manufacturers and the decorative coating manufacturer for the surface being prepared, unless otherwise specified.

b. White spirit shall be to BS 245. c. Knotting shall be to BS 1336.d. Stopping for woodwork to receive clear finish shall be tinted to match surrounding

woodwork, to approval.e. Stopping for other internal work shall be plastic base, non shrinking.

3. Gloss/Semi-Gloss Painta. Long - oil based alkyd paint, undercoats and finishing coats to BS 2524.b. Polyurethane based paint, undercoat and finishing coat.c. Titanium Dioxide paint, undercoat and finishing coat.

4. Emulsion PaintVinyl emulsion paint, matt and semi-gloss as directed by the Contracting authority. All emulsion paints shall be vinyl unless otherwise specified.

5. Emulsion Primer/Mist CoatsMaterial shall be thinned strictly in accordance with manufacturer's instructions.

6. Wood PrimerAcrylic.

7. Steel Primera. Calcium plumbate to BS 3698. b. Zinc-rich primer.

8. Steel Primer for Mechanical WorkZinc chromate.

9. Galvanized Steel Primer2 pack etching primer.

10. Bituminous PaintTo BS 3416.

11. Anti-Alkaline PrimerAs recommended and manufactured by the manufacturer of follow-up coats

12. Lead ContentLead content in the pigment shall not be allowed.


G. Workmanship1. Preparation

A. Generallya. Prepare surfaces in accordance with decorative coating manufacturer's

recommendations. b. Remove ironmongery, electrical plates and fittings, etc., from surfaces to be

decorated and refix on completion of decoration.c. Use rust inhibitors, size, stopping, knotting and fillers in accordance with

manufacturer's recommendationsd. Ensure that all holes, cracks, defective joints and other defects in surfaces to be

prepared and decorated have been made good so that they are not visible when decoration is completed.

e. Ensure that pre-primed surfaces have been properly prepared and that the primer is of a suitable type, firmly adhering and in good condition

f. Before decorating allow surfaces to dry thoroughlyg. Brush down all surfaces immediately before decorating to remove dust, dirt and

loose material. Remove oil and grease with clean cloths and cleaning solvents prior to mechanical cleaning.

h. Apply three (3) coats of putty to concrete and plaster surfaces, if required by the Contracting authority, or as per B.O.Q.

B. Concrete, Block, Plaster and Render Surfaces.a. Remove release agents by washing with a weak detergent solution and rinse off with

clean water.b. Ensure that surface deposits and loose or flaking material are removed.c. Efflorescence: Remove surface salts with a stiff brush or coarse dry cloth. Remove

residue with a damp cloth frequently wrung out in clean water. Leave for 48 hours and repeat process if further efflorescence occurs. Sand or scrape glossy-surfaced hard bloom to provide a key for finish.

C. Iron and Steel Surfacesa. Manual cleaning: chip, scrape and wire-brush surfaces to remove loose scale,

welding slab and spatter. Clean out crevices. Remove oil, grease and dirt using white spirit, naphtha or steam.

b. Pre-primed surfaces: ensure that defective primer, rust and loose scare are removed back to bare metal, and patch primer to match existing. Remove dirt and grease from satisfactorily primed surfaces and rub down lightly.

D. Timber, Plywood, Chipboard, Fibre Board Surfacesa. Moisture content: ensure that at time of decorating timber has a moisture content

appropriate to its useb. Loose knots: ensure that large and dead knots are removed and made good with

sound timber. Rub down flush before primingc. Smoothness: ensure that surfaces have a smooth, even finish with arises rounded or

eased.d. Nail and screw heads: ensure that heads are countersunk sufficiently to hold

stopping. Ensure that pelleting is of full size, fills the whole of the recess and is securely fixed.


e. Stopping for painting: after priming, stop nail and screw holes and similar depressions with stopping pressed well in. Finish off brush with surface.

f. Stopping for clear coatings: stop nail and screw holes and similar depressions with stopping to match color of timber, pressed well in. Finish off flush with surface.

g. Knotting: remove resinous exudations and apply knotting to resinous timber and all knots and allow to dry.

h. Degreasing: wash down with white spirit immediately before priming hardwoods containing an excess of natural oil. Clean off surface oils from building boards with white spirit and roughen surface with fine abrasive paper. Dust of surface before decorating.

i. Filling: after priming or sealing and stopping, fill pore and grain irregularities with filler, brush or knife applied. Remove surplus and rub down to leave a smooth, even surface.

j. Pre-primed surface: ensure that any areas of defective primer are removed and patch-primed to match existing. Remove dirt and grease from satisfactory primed surfaces and rub down lightly.

E. Mechanical and Electrical InstallationsAll ferrous pipework, fittings, pump bodies, valves and steelwork supports installed in the Contract Works shall be cleaned down by wire brushing, until all signs of rust have been removed. All surfaces shall then be given a coat of red oxide prior to the application of thermal insulation, or final painting.All copper pipework where exposed in rooms shall be cleaned down, degreased and adhering metal cleaned off without damage to the installation.All cement is to be removed from pipework, brackets, etc.

F. Miscellaneous New Surfacesa. Plastic Surfaces: wash down with soap and water or detergent solution to remove

dirt and grease and while wet lightly abrade with fine abrasive paper. Rinse off with clean water.

2. Coating MaterialsA. Generally

a. Prepare surfaces for decoration as specified in G1 above.b. Where surfaces have been treated with preservatives, check wit treatment

manufacturer that coating materials are compatible with the treatment.c. Cleanliness:d. Keep all brushes, tools and equipment in clean condition. Keep all surfaces clean and

free from dust during coating and drying.e. Provide suitable receptacle for liquids, slop washings, etc.

B. Precautions and Protectiona. Place paint or solvent soaked rags, waste or other materials which might constitute a

fire hazard in metal containers and remove from premises at close of day's work. Take every precaution to avoid damage by fire.

b. Protect freshly applied coatings from damage.c. Exhibit 'Wet Paint' signs and provide protection barriers where necessary. d. Protect adjacent surfaces adequately.e. Protect cordage, seals and the like from contamination by paint. Remove any paint


that does get on by appropriate solvent.f. Remove ironmongery and other fittings as in G 1.01 (b)above. Items which must

remain in position during painting must be adequately and carefully taped.C. Preparation of Materials

a. Generally. Prepare coating materials as recommended by their manufacturers.b. Strain through fine gauze any coating materials showing bittiness in application.c. Do not intermix different coating materials.d. Stir coating materials to attain an even consistency before use unless otherwise

recommended by manufacturers.D. Application

a. Carry out decoration in color as selected by the Contracting authority and in accordance with approved samples.

b. Generally: apply coatings in accordance with their manufacturer's recommendations to clean, dry surfaces in dry dust free atmospheric coats have hardened.

c. Covering capacity: the Contractor is to allow for quantities of paint necessary to give proper cover in the number of coats specified and in accordance with the nature of the material to which it is to be applied.

d. Unsuitable conditions: don not apply coatings:i. To surfaces affected by moisture or frost.

ii. When ambient temperature is below 4 degrees C.iii. When heat is likely to cause blistering or wrinkling.

e. Priming Generally:i. Apply priming coats by brush unless other methods are approved.

ii. ii. Work primer into surface, joints, angles and end grain.iii. Ensure that priming coats are of adequate thickness and suit surface porosity.iv. Ensure that any primed surfaces which have deteriorated on Site or in transit

are touched up or re-primed.f. Concealed joinery surfaces: apply priming coat to all concealed surfaces of built in

joinery components before fixing.g. Priming metal: prime metal surfaces on same day as they have been cleaned.h. Undercoats: apply an even film over all exposed surfaces, avoiding uneven thickness

at edges and angles.i. Finishing coats: apply an even film over all exposed surfaces, avoiding brush marks,

sags, runs and other defects.j. Rub down all priming and undercoats to a smooth surface with abrasive paper and

remove all dust before applying the next coat.k. Cut in neatly and cleanly. Do not splash or mark adjacent surfaces. l. Brush Painting:

i. Apply all paints by brush unless otherwise specified.ii. Lay off all areas evenly and ensure that finished surfaces are free from brush

marks.m. Roller painting will be permitted in the application of emulsion paint and should

applied in one coat or if necessary in two coats with roller on priming coat.n. Spray painting will be permitted in the application of emulsion paint. o. Spray Painting: mask all adjoining surfaces.


p. Cleaning: clean off any paint spots or spillage from adjacent surfaces as the work proceeds without damage to that surface.

E. Painting of Electrical InstallationsThe Contractor shall paint all steel supports, bearers, plinths, and structures in the following non-habitable areas:a. Plantrooms where required.b. Switch rooms, where applicable.c. Tank rooms.d. Ducts, voids and cavities.e. Work above false ceilings, if required.The Contractor shall paint all of the pipework, and brackets, lagged or unlagged and ventilation ductwork in habitable areas where these items are exposed and visible. Chromium plated, stainless steel or brass valves and stopcocks are not to be painted.Damage to priming coats on all equipment and plant shall be made good as the work proceeds as soon as possible after the damage occurs to prevent deterioration.Priming coats listed hereunder are additional to the Works applied primer specified in E5 above.All black steel pipework is to be wire-brushed cleaned and painted with one coat of zinc chromate primer as work proceeds.Uninsulated black steel pipework in ducts, voids and cavities is to be wire-brushed, cleaned and painted one coat zinc chromate primer and one coat of best quality bituminous paint as work proceeds.All uninsulated black steel pipework in plant rooms, switch rooms and tank rooms is to be wire-brushed, cleaned and painted one undercoat as work proceeds and one coat of hard gloss to an approved color prior to completion.Supports, bearers and other uncovered steelwork in ducts, voids and cavities shall be prepared, rust-proofed and painted one coat zinc chromate primer and one coat of black bituminous paint as work proceeds.Exposed bearers and supports and other exposed steelwork, not galvanized, in plant rooms and tank rooms shall be prepared and painted one coat of zinc chromate and two coats of approved epoxy resin paint of approved color.All exposed metal flues shall be cleaned, prepared, rust-proofed and painted two coats of heat resisting paint of approved quality and color.All polished work and polished or satin-finished plated articles shall be protected during the progress of the Works and cleaned and repolished immediately prior to handover.All lagging on pipework and ductwork installations with a cold hard setting or white cotton canvas finish shall be prepared, primed, and painted two coats of approved long oil based alkyd paint to selected color.All uninsulated non-ferrous valve bodies shall be thoroughly cleaned and left unpainted.All finishing coats of paint shall be applied when the Works are nearing completion or as directed.

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